Example #1
0
def test_python_render():
    """Test rendering with the Python API."""
    html = TestHTML(string='<body><img src=pattern.png>',
        base_url=resource_filename('dummy.html'))
    css = CSS(string='''
        @page { margin: 2px; size: 8px; background: #fff }
        body { margin: 0; font-size: 0 }
        img { image-rendering: optimizeSpeed }
    ''')

    png_bytes = html.write_png(stylesheets=[css])
    pdf_bytes = html.write_pdf(stylesheets=[css])
    assert png_bytes.startswith(b'\211PNG\r\n\032\n')
    assert pdf_bytes.startswith(b'%PDF')

    check_png_pattern(png_bytes)
    # TODO: check PDF content? How?

    class fake_file(object):
        def __init__(self):
            self.chunks = []
            self.write = self.chunks.append

        def getvalue(self):
            return b''.join(self.chunks)
    png_file = fake_file()
    html.write_png(png_file, stylesheets=[css])
    assert png_file.getvalue() == png_bytes
    pdf_file = fake_file()
    html.write_pdf(pdf_file, stylesheets=[css])
    assert pdf_file.getvalue() == pdf_bytes

    with temp_directory() as temp:
        png_filename = os.path.join(temp, '1.png')
        pdf_filename = os.path.join(temp, '1.pdf')
        html.write_png(png_filename, stylesheets=[css])
        html.write_pdf(pdf_filename, stylesheets=[css])
        assert read_file(png_filename) == png_bytes
        assert read_file(pdf_filename) == pdf_bytes

        png_filename = os.path.join(temp, '2.png')
        pdf_filename = os.path.join(temp, '2.pdf')
        with open(png_filename, 'wb') as png_file:
            html.write_png(png_file, stylesheets=[css])
        with open(pdf_filename, 'wb') as pdf_file:
            html.write_pdf(pdf_file, stylesheets=[css])
        assert read_file(png_filename) == png_bytes
        assert read_file(pdf_filename) == pdf_bytes

    x2_png_bytes = html.write_png(stylesheets=[css], resolution=192)
    check_png_pattern(x2_png_bytes, x2=True)

    pages = list(html.get_png_pages(stylesheets=[css]))
    assert pages == [(8, 8, png_bytes)]
    pages = list(html.get_png_pages(stylesheets=[css], resolution=192))
    assert pages == [(16, 16, x2_png_bytes)]
Example #2
0
 def test(html, blank=False):
     html = TestHTML(string=html, url_fetcher=fetcher, base_url=base_url)
     check_png_pattern(html.write_png(stylesheets=[css]), blank=blank)
Example #3
0
def test_low_level_api():
    html = TestHTML(string="<body>")
    css = CSS(
        string="""
        @page { margin: 2px; size: 8px; background: #fff }
        html { background: #00f; }
        body { background: #f00; width: 1px; height: 1px }
    """
    )
    pdf_bytes = html.write_pdf(stylesheets=[css])
    assert pdf_bytes.startswith(b"%PDF")
    assert html.render([css]).write_pdf() == pdf_bytes

    png_bytes = html.write_png(stylesheets=[css])
    document = html.render([css], enable_hinting=True)
    page, = document.pages
    assert page.width == 8
    assert page.height == 8
    assert document.write_png() == (png_bytes, 8, 8)
    assert document.copy([page]).write_png() == (png_bytes, 8, 8)

    surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 8, 8)
    page.paint(cairo.Context(surface))
    file_obj = io.BytesIO()
    surface.write_to_png(file_obj)
    check_png_pattern(file_obj.getvalue())

    surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 8, 8)
    context = cairo.Context(surface)
    # Rotate at the center
    context.translate(4, 4)
    context.rotate(-math.pi / 2)
    context.translate(-4, -4)
    page.paint(context)
    file_obj = io.BytesIO()
    surface.write_to_png(file_obj)
    check_png_pattern(file_obj.getvalue(), rotated=True)

    document = html.render([css], enable_hinting=True)
    page, = document.pages
    assert (page.width, page.height) == (8, 8)
    png_bytes, width, height = document.write_png(resolution=192)
    assert (width, height) == (16, 16)
    check_png_pattern(png_bytes, x2=True)

    def png_size(result):
        png_bytes, width, height = result
        surface = cairo.ImageSurface.create_from_png(io.BytesIO(png_bytes))
        assert (surface.get_width(), surface.get_height()) == (width, height)
        return width, height

    document = html.render([css], enable_hinting=True)
    page, = document.pages
    assert (page.width, page.height) == (8, 8)
    # A resolution that is not multiple of 96:
    assert png_size(document.write_png(resolution=145.2)) == (13, 13)

    document = TestHTML(
        string="""
        <style>
            @page:first { size: 5px 10px } @page { size: 6px 4px }
            p { page-break-before: always }
        </style>
        <p></p>
        <p></p>
    """
    ).render()
    page_1, page_2 = document.pages
    assert (page_1.width, page_1.height) == (5, 10)
    assert (page_2.width, page_2.height) == (6, 4)

    result = document.write_png()
    # (Max of both widths, Sum of both heights)
    assert png_size(result) == (6, 14)
    assert document.copy([page_1, page_2]).write_png() == result
    assert png_size(document.copy([page_1]).write_png()) == (5, 10)
    assert png_size(document.copy([page_2]).write_png()) == (6, 4)
Example #4
0
def test_python_render():
    """Test rendering with the Python API."""
    base_url = resource_filename("dummy.html")
    html_string = "<body><img src=pattern.png>"
    css_string = """
        @page { margin: 2px; size: 8px; background: #fff }
        body { margin: 0; font-size: 0 }
        img { image-rendering: optimizeSpeed }

        @media screen { img { transform: rotate(-90deg) } }
    """
    html = TestHTML(string=html_string, base_url=base_url)
    css = CSS(string=css_string)

    png_bytes = html.write_png(stylesheets=[css])
    pdf_bytes = html.write_pdf(stylesheets=[css])
    assert png_bytes.startswith(b"\211PNG\r\n\032\n")
    assert pdf_bytes.startswith(b"%PDF")

    check_png_pattern(png_bytes)
    # TODO: check PDF content? How?

    class fake_file(object):
        def __init__(self):
            self.chunks = []

        def write(self, data):
            self.chunks.append(bytes(data[:]))

        def getvalue(self):
            return b"".join(self.chunks)

    png_file = fake_file()
    html.write_png(png_file, stylesheets=[css])
    assert png_file.getvalue() == png_bytes
    pdf_file = fake_file()
    html.write_pdf(pdf_file, stylesheets=[css])
    assert pdf_file.getvalue() == pdf_bytes

    with temp_directory() as temp:
        png_filename = os.path.join(temp, "1.png")
        pdf_filename = os.path.join(temp, "1.pdf")
        html.write_png(png_filename, stylesheets=[css])
        html.write_pdf(pdf_filename, stylesheets=[css])
        assert read_file(png_filename) == png_bytes
        assert read_file(pdf_filename) == pdf_bytes

        png_filename = os.path.join(temp, "2.png")
        pdf_filename = os.path.join(temp, "2.pdf")
        with open(png_filename, "wb") as png_file:
            html.write_png(png_file, stylesheets=[css])
        with open(pdf_filename, "wb") as pdf_file:
            html.write_pdf(pdf_file, stylesheets=[css])
        assert read_file(png_filename) == png_bytes
        assert read_file(pdf_filename) == pdf_bytes

    x2_png_bytes = html.write_png(stylesheets=[css], resolution=192)
    check_png_pattern(x2_png_bytes, x2=True)

    screen_css = CSS(string=css_string, media_type="screen")
    rotated_png_bytes = html.write_png(stylesheets=[screen_css])
    check_png_pattern(rotated_png_bytes, rotated=True)

    assert (
        TestHTML(string=html_string, base_url=base_url, media_type="screen").write_png(
            stylesheets=[io.BytesIO(css_string.encode("utf8"))]
        )
        == rotated_png_bytes
    )
    assert (
        TestHTML(
            string="<style>%s</style>%s" % (css_string, html_string), base_url=base_url, media_type="screen"
        ).write_png()
        == rotated_png_bytes
    )
Example #5
0
 def test(html, blank=False):
     html = TestHTML(string=html, url_fetcher=fetcher, base_url=base_url)
     check_png_pattern(html.write_png(stylesheets=[css]), blank=blank)
Example #6
0
def test_low_level_api():
    html = TestHTML(string='<body>')
    css = CSS(string='''
        @page { margin: 2px; size: 8px; background: #fff }
        html { background: #00f; }
        body { background: #f00; width: 1px; height: 1px }
    ''')
    pdf_bytes = html.write_pdf(stylesheets=[css])
    assert pdf_bytes.startswith(b'%PDF')
    assert html.render([css]).write_pdf() == pdf_bytes

    png_bytes = html.write_png(stylesheets=[css])
    document = html.render([css], enable_hinting=True)
    page, = document.pages
    assert page.width == 8
    assert page.height == 8
    assert document.write_png() == (png_bytes, 8, 8)
    assert document.copy([page]).write_png() == (png_bytes, 8, 8)

    surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 8, 8)
    page.paint(cairo.Context(surface))
    file_obj = io.BytesIO()
    surface.write_to_png(file_obj)
    check_png_pattern(file_obj.getvalue())

    surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 8, 8)
    context = cairo.Context(surface)
    # Rotate at the center
    context.translate(4, 4)
    context.rotate(-math.pi / 2)
    context.translate(-4, -4)
    page.paint(context)
    file_obj = io.BytesIO()
    surface.write_to_png(file_obj)
    check_png_pattern(file_obj.getvalue(), rotated=True)

    document = html.render([css], enable_hinting=True)
    page, = document.pages
    assert (page.width, page.height) == (8, 8)
    png_bytes, width, height = document.write_png(resolution=192)
    assert (width, height) == (16, 16)
    check_png_pattern(png_bytes, x2=True)

    def png_size(result):
        png_bytes, width, height = result
        surface = cairo.ImageSurface.create_from_png(io.BytesIO(png_bytes))
        assert (surface.get_width(), surface.get_height()) == (width, height)
        return width, height

    document = html.render([css], enable_hinting=True)
    page, = document.pages
    assert (page.width, page.height) == (8, 8)
    # A resolution that is not multiple of 96:
    assert png_size(document.write_png(resolution=145.2)) == (13, 13)

    document = TestHTML(string='''
        <style>
            @page:first { size: 5px 10px } @page { size: 6px 4px }
            p { page-break-before: always }
        </style>
        <p></p>
        <p></p>
    ''').render()
    page_1, page_2 = document.pages
    assert (page_1.width, page_1.height) == (5, 10)
    assert (page_2.width, page_2.height) == (6, 4)

    result = document.write_png()
    # (Max of both widths, Sum of both heights)
    assert png_size(result) == (6, 14)
    assert document.copy([page_1, page_2]).write_png() == result
    assert png_size(document.copy([page_1]).write_png()) == (5, 10)
    assert png_size(document.copy([page_2]).write_png()) == (6, 4)
Example #7
0
def test_python_render():
    """Test rendering with the Python API."""
    base_url = resource_filename('dummy.html')
    html_string = '<body><img src=pattern.png>'
    css_string = '''
        @page { margin: 2px; size: 8px; background: #fff }
        body { margin: 0; font-size: 0 }
        img { image-rendering: pixelated }

        @media screen { img { transform: rotate(-90deg) } }
    '''
    html = TestHTML(string=html_string, base_url=base_url)
    css = CSS(string=css_string)

    png_bytes = html.write_png(stylesheets=[css])
    pdf_bytes = html.write_pdf(stylesheets=[css])
    assert png_bytes.startswith(b'\211PNG\r\n\032\n')
    assert pdf_bytes.startswith(b'%PDF')

    check_png_pattern(png_bytes)

    # TODO: check PDF content? How?

    class fake_file(object):
        def __init__(self):
            self.chunks = []

        def write(self, data):
            self.chunks.append(bytes(data[:]))

        def getvalue(self):
            return b''.join(self.chunks)

    png_file = fake_file()
    html.write_png(png_file, stylesheets=[css])
    assert png_file.getvalue() == png_bytes
    pdf_file = fake_file()
    html.write_pdf(pdf_file, stylesheets=[css])
    assert pdf_file.getvalue() == pdf_bytes

    with temp_directory() as temp:
        png_filename = os.path.join(temp, '1.png')
        pdf_filename = os.path.join(temp, '1.pdf')
        html.write_png(png_filename, stylesheets=[css])
        html.write_pdf(pdf_filename, stylesheets=[css])
        assert read_file(png_filename) == png_bytes
        assert read_file(pdf_filename) == pdf_bytes

        png_filename = os.path.join(temp, '2.png')
        pdf_filename = os.path.join(temp, '2.pdf')
        with open(png_filename, 'wb') as png_file:
            html.write_png(png_file, stylesheets=[css])
        with open(pdf_filename, 'wb') as pdf_file:
            html.write_pdf(pdf_file, stylesheets=[css])
        assert read_file(png_filename) == png_bytes
        assert read_file(pdf_filename) == pdf_bytes

    x2_png_bytes = html.write_png(stylesheets=[css], resolution=192)
    check_png_pattern(x2_png_bytes, x2=True)

    screen_css = CSS(string=css_string, media_type='screen')
    rotated_png_bytes = html.write_png(stylesheets=[screen_css])
    check_png_pattern(rotated_png_bytes, rotated=True)

    assert TestHTML(string=html_string, base_url=base_url,
                    media_type='screen').write_png(
                        stylesheets=[io.BytesIO(css_string.encode('utf8'))
                                     ]) == rotated_png_bytes
    assert TestHTML(string='<style>%s</style>%s' % (css_string, html_string),
                    base_url=base_url,
                    media_type='screen').write_png() == rotated_png_bytes
Example #8
0
def test_python_render():
    """Test rendering with the Python API."""
    base_url = resource_filename('dummy.html')
    html_string = '<body><img src=pattern.png>'
    css_string = '''
        @page { margin: 2px; size: 8px; background: #fff }
        body { margin: 0; font-size: 0 }
        img { image-rendering: optimizeSpeed }

        @media screen { img { transform: rotate(-90deg) } }
    '''
    html = TestHTML(string=html_string, base_url=base_url)
    css = CSS(string=css_string)

    png_bytes = html.write_png(stylesheets=[css])
    pdf_bytes = html.write_pdf(stylesheets=[css])
    assert png_bytes.startswith(b'\211PNG\r\n\032\n')
    assert pdf_bytes.startswith(b'%PDF')

    check_png_pattern(png_bytes)
    # TODO: check PDF content? How?

    class fake_file(object):
        def __init__(self):
            self.chunks = []
            self.write = self.chunks.append

        def getvalue(self):
            return b''.join(self.chunks)
    png_file = fake_file()
    html.write_png(png_file, stylesheets=[css])
    assert png_file.getvalue() == png_bytes
    pdf_file = fake_file()
    html.write_pdf(pdf_file, stylesheets=[css])
    assert pdf_file.getvalue() == pdf_bytes

    with temp_directory() as temp:
        png_filename = os.path.join(temp, '1.png')
        pdf_filename = os.path.join(temp, '1.pdf')
        html.write_png(png_filename, stylesheets=[css])
        html.write_pdf(pdf_filename, stylesheets=[css])
        assert read_file(png_filename) == png_bytes
        assert read_file(pdf_filename) == pdf_bytes

        png_filename = os.path.join(temp, '2.png')
        pdf_filename = os.path.join(temp, '2.pdf')
        with open(png_filename, 'wb') as png_file:
            html.write_png(png_file, stylesheets=[css])
        with open(pdf_filename, 'wb') as pdf_file:
            html.write_pdf(pdf_file, stylesheets=[css])
        assert read_file(png_filename) == png_bytes
        assert read_file(pdf_filename) == pdf_bytes

    x2_png_bytes = html.write_png(stylesheets=[css], resolution=192)
    check_png_pattern(x2_png_bytes, x2=True)

    screen_css = CSS(string=css_string, media_type='screen')
    rotated_png_bytes = html.write_png(stylesheets=[screen_css])
    check_png_pattern(rotated_png_bytes, rotated=True)

    assert TestHTML(
        string=html_string, base_url=base_url, media_type='screen'
    ).write_png(
        stylesheets=[io.BytesIO(css_string.encode('utf8'))]
    ) == rotated_png_bytes
    assert TestHTML(
        string='<style>%s</style>%s' % (css_string, html_string),
        base_url=base_url, media_type='screen'
    ).write_png() == rotated_png_bytes